Moving from wordpress.com to ww.wp.xz.cn

I am very new to all of this and trying to figure it out myself but I’m a bit stuck. I would really appriciate any advice. I registered my domain name with wordpress.com. I am being hosted by hostgator. I have also purchased a theme from themeforest.

I would like to move my domain name from wordpress.com to ww.wp.xz.cn. I haven’t really started my website so I don’t need any content to come with me but I need to be with ww.wp.xz.cn to use my theme. Also, I would like to be able to sell my own ad space. I have downloaded wordpress 3.5.1 on my QuickInstall but I don’t really know where to go from here. How do I get my domain name to ww.wp.xz.cn?

Thank you!